92 Prizm, 4AFE eng, 1.6L DOHC, 3spd AT. At 116K I took this car to a Toyota dealership for a valve adj since there was fairly pronounced valve train clicking noise. I purchased the car with 110k on it. After a 20 mi trip to the dealer's shop (eng was at normal operating temp) a mechanic did the work without letting the engine cool down. When the work was done I was told he only had to adjust a few valves and there still was " a little bit of ticking". Well, it seems to " tick" about as much as before. Another mechanic told me its wear in the valve train and nothing to worry about. I've owned Toyotas, Hondas and a Mazda and I always did my own valve adj and I know that properly adj'd valves don't make " clicking noises". A few years ago I became disabled or I would have done this job myself. According to my Haynes manual this engine should be cold when the valves are adjusted. I think there should be no noise if the valve adj is done correctly on a cold engine because the mechanical adjustment compensates for any wear. That is why the mech adjustment exists. Am I correct about this or am I all wet?
Thursday, November 1st, 2007 AT 10:12 AM